Are there any type of mods to make you imune to that stupid admin "sleep" thing and the choke thing? Cuz the admins totally abuse those. I would really appreciate some help on this to make the game much more fun.

Unfortunately, you are experiencing the type of player abuse ("amabuse") that killed Jedi Outcast and Jedi Academy. The only thing you can do is play on servers that aren't running an admin mod because there isn't any defense. CTF servers tend to be free of that kind of nonsense.